Analytic approach for optimal quantization of diffractive optical elements.

Analytic design and solutions for resonance domain diffractive optical elements.

A model for designing and analyzing complicated surface relief diffractive elements in the resonance domain is developed. It is based on subdividing the complicated diffractive element into many highly efficient local diffraction gratings whose surface relief modulations can be effectively characterized as slanted volume gratings for which closed form analytic solutions exist. The model is illu...

Generalized design of diffractive optical elements using neural networks

Diffractive optical elements (DOE) utilize diffraction to manipulate light in optical systems. These elements have a wide range of applications including optical interconnects, coherent beam addition, laser beam shaping and refractive optics aberration correction. Due to the wide range of applications, optimal design of DOE has become an important research problem. In the design of the DOEs, ex...

Pseudospectral method for the analysis of diffractive optical elements

A pseudospectral method for the analysis of diffractive optical elements is presented. This method is a fullvectorial direct solution of the time-domain Maxwell equations based on a spectral approximation of the spatial derivatives employed within a multidomain framework. The method exhibits little numerical dispersion, and only a few points per wavelength are needed to accurately resolve the p...

Optimal Design and Fabrication of Fine Diffractive Optical Elements Using Proximity Correction with Electron-beam Lithography

Optimal full speckle suppression in laser projectors using one 2D Barker code-type optical diffractive elements

The effective method of a speckle suppression using one moving 2D diffractive optical elements based on the periodic Barker code sequence is developed. It was proved that method has the same optical parameters as method based on two 1D Barker code DOE stretched and moving in orthogonal directions. It is shown that DOE movement in special direction allows to use full numerical aperture of object...